Composition for sound-records.



PATENTED JAN. 22, 1907.

EMT. B. BROGHERIOUX, P. J. TOOHON, A. FORTIER & I.. V. MAROTTE.

COMPOSITION IOR SOUND RECORDS.

APPLICATION FILED 0OT.12. 1 905.

` ter in the following proportions: permanent EMILIEN JEAN BAPTISTE BEOOHERIOUX, PAUL JOSEPH TOCHON, ALFRED 'FORTIER, AND LEON VlCTOR MAROTTE, Ol" PARIS, FRANCE.

GOMPQSITIN FOR SOUND-RECORDS.

Specification of Letters Patent.

iPatented J an. 22, 1907.

Application led October 12, 1905. 'Seria1No. 282.498.

To @ZZ whom it may concern: g l Be it known that we, EMILIEN JEAN BAP- TIsTE BROOHERIOUX, publisher, of 23 Quai I Voltaire, PAUL JOSEPH TOCHON, merchant, of 3 Rue des Deux-Boules, ALFRED FOR'rIER, printer, of 35 Rue Jussieu, and LEON VICTOR l MAROTTE, printer, of 35 Rue Jussieu, in the city of Paris, Republic of France, have in- -g vented a Composition for Sound-Records, of which the following is a full, clear, and exact description.

The object of this invention `is the production of a special composition designed to be applied to the surface of paper,`card`board, pasteboard, and-other substances to form a film or coating on which sounds may be recorded and subsequently reproduced by means of a phonograph.

The invention is especially suitable for the production of phonogram-cards and postal phonogram-cards or cards which bearing the record may be forwarded by post and read by the recipient by means of a phonograph.

The composition is composed of permanent white, (barium sulfate,) zinc-white, (light oxidor` zinc) and a special encaustic, (made by dissolving stearin in water in the presence of salt of tartar,) hide-glue, and Wawhite, 0.250 kilograms; zinc-white, 0.125 kilogram; encaustic, 0.250 kilogram; glue, 0.187 kilogram; Water, one-half liter.

The encaustic is itself prepared according to the following formula: stearin, two kilorrams; salt of tartar, 0.125 kilogram; water,

orty liters.

In preparing the composition We proceed as follows: First, the ermanent White, the encaustic, the zinc-white, and the water are mixed, and the ingredients are incorporated or blended together until the whole becomes a homogeneous mass. Second, the glue dissolved in a water-bath is then added. Third, the mixture is then strained. This composition is applied in layers spread by means of a brush, one coat being allowed to dry before the next is applied. The card or surface thus coated is rolled or surfaced either by being subjectl ed to pressure between metal plates-zinc plates, for example-or passed between calendering-rolls.

The constituent elements of the abovementioned composition may be replaced by their chemical equivalents or analogues; but

in order to impart to the com osition the requisite qualities it is necessary t at it should contain all the substances mentioned or their substitutes.

The sulfate of baryta may be replaced by one or. several of the following substancesviz., either the sulfate or the carbonate of lead or by precipitated calcium sulfate, as well as, but less eli'icaciously, lby carbonate of baryta, precipitated sulfate of strontium, or precipitated carbonate of strontium or caronate of lime. The light OXid of zinc may be replaced by the precipitated oXid, sulfid, or carbonate or by kaolin, talc, calcined English magnesia, carbonate of magnesia, or precipitated alumina.

Instead f hide-glue We may employ fishglue, paste, dextrine, or gelatin; but hide-glue is preferable, as it renders the coating softer and more supple.

1. The herein-described composition of matter, consisting of permanent white, Azincwhite, stearin, salt oftartar, glue and water admixed into a paste.

2. The composition herein described, consisting of permanent White and encaustic zinc-white and glue.

The foregoing specification of our composition for application to paper, cardboard, and other substances to form a coating for recording and reproducing sounds phonographically signed by us this 27th day of September, 1905.

EEILIEN JEAN BAPTISTE BRocEEEIoUX. PAUL JOSEPH rocEoN. ALFRED EOETIEE.

LEON vic'roEnAEorrE.

Witnesses:

HANSON C. CoxE, GEORGES CHARLES COQUET. 

